#include<stdio.h> 

struct mecal{
	char a;
	char b;
	int  c;
};
struct mecal aa;
struct mecal1{
	char a;
	int b;
	char  c;
};
struct mecal1 aaa;
struct mecal2{
	char a;
	int b;
	struct mecal1  c;
};
struct mecal2 aaaa;

void main(){
	printf("the size of mecal is %d\n",sizeof(aa));
	printf("the size of mecal1 is %d\n",sizeof(aaa));
	printf("the size of mecal2 is %d\n",sizeof(aaaa));
}
